I have a Defy Gemini Touch Control Vitroceramic Hob that was installed in 2013: https://www.defy.co.za/product/770-ceran-touch-control-hob/I would like to swop it for a Defy Gemini gas on glass hob. I am willing to pay in the difference if need be: https://www.defy.co.za/product/5-burner-gas-glass-hob/ Let me know if you are interested